Fixed bugs; and, improved the efficiency of some pce library functions.

2015-11-26 15:06:20 -05:00
parent 959eff34a3
commit 39694d0aaa
16 changed files with 158 additions and 229 deletions
--- a/libsrc/pce/clrscr.s
+++ b/libsrc/pce/clrscr.s
@@ -12,20 +12,15 @@
        .include        "extzp.inc"

 _clrscr:
-        st0     #VDC_MAWR
-        st1     #<$0000
-        st2     #>$0000
-
+        VREG    VDC_MAWR, $0000
        st0     #VDC_VWR
+
        ldy     #$40
 rowloop:
        ldx     #$80
 colloop:
-        lda     #' '            ; low byte of char. index
-        sta     VDC_DATA_LO
-        lda     #$02            ; background color, high nybble of char. index
-        sta     VDC_DATA_HI
-
+        st1     #' '            ; low byte of char. index
+        st2     #$02            ; background color, high nybble of char. index
        dex
        bne     colloop
        dey